Dinh Sy, Nguyen, Ho Quang Minh, and Bui Trang Viet. “ROLES OF SOME ENVIRONMENT FACTORS AND PLANT GROWTH REGULATORS ON THE CHANGE IN NICOTINE LEVELS IN NICOTIANA TABACUM L. LEAVES”. Science and Technology Development Journal 8, no. 9 (September 30, 2005): 34-39. Accessed December 23, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/3068.